The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 08, 2002
Filed:
Apr. 29, 1999
Applicant:
Inventor:
Osamu Kuroki, Miyazaki, JP;
Assignee:
Oki Electric Industry Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01R 3/128 ; G11C 2/900 ;
U.S. Cl.
CPC ...
G01R 3/128 ; G11C 2/900 ;
Abstract
A semiconductor memory device includes a memory circuit which stores data, a control circuit which outputs a data and a control signal to control the memory circuit and which receives a data stored in the memory circuit, and a selector circuit which selectively transfers either one of the data output from the control circuit or external data output from an external device to the memory circuit in response to a selection signal. The memory circuit, the control circuit, and the selector circuit in the semiconductor memory device are formed on a single chip.